/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.solr.analysis;

import java.util.Map;

import org.apache.lucene.analysis.TokenStream;
import org.apache.lucene.analysis.LowerCaseFilter;

/**
 * Factory for {@link LowerCaseFilter}.
 * 
 * <pre class="prettyprint" >
 * &lt;fieldType name="text_lwrcase" class="solr.TextField" positionIncrementGap="100"&gt;
 *   &lt;analyzer&gt;
 *     &lt;tokenizer class="solr.WhitespaceTokenizerFactory"/&gt;
 *     &lt;filter class="solr.LowerCaseFilterFactory"/&gt;
 *   &lt;/analyzer&gt;
 * &lt;/fieldType&gt;
 * </pre>
 * 
 * @version $Id: LowerCaseFilterFactory.java 1207001 2011-11-28 07:47:07Z
 *          uschindler $
 */
public class LowerCaseFilterFactory extends BaseTokenFilterFactory implements
		MultiTermAwareComponent {
	@Override
	public void init(Map<String, String> args) {
		super.init(args);
		assureMatchVersion();
	}

	public LowerCaseFilter create(TokenStream input) {
		return new LowerCaseFilter(luceneMatchVersion, input);
	}

	public Object getMultiTermComponent() {
		return this;
	}
}
